How do I avoid discriminating in relation to admission decisions

If your admissions criteria are non-discriminatory (see You must not place terms on a person's admission to your institution which are discriminatory) and you follow them, and you ensure that the people making admissions decisions are aware of the rules and the principles of fair admission and abide by them, then you are unlikely to refuse admission to a person for a discriminatory reason. Unless the decision-makers are well trained in these principles there is a danger that they may make prejudiced or unfair judgments which could result in acts of unlawful discrimination.

For Example:

The admission tutor for a car maintenance course interviews a transsexual woman and decides that she would not be suitable for the course as she would not fit in with the other students on the course. This would be unlawful direct gender reassignment discrimination.